Technical Petrol problems HELPPPPP

[corky]

Right something definitely wrong here with the sporting I put £30 petrol in on Thursday night went JUST over half way.... NOW I reset the counter I've done 40 miles been driving sensible and it's used half of it already!! My old Punto I was getting 40 miles Ishhh for £5 need help guys!

 

[s and b]

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[fingers99]

Problem is that gauges are quite incredibly inaccurate: generally they're correct(ish) when empty and full -- everything else is at best a guess.

Best way is to fill the tank. Reset trip, drive 50 miles or so, refill, note down the quantity (rather than the cost) of petrol used, calculate mpg or mpl.

Assuming that the EML isn't on, most likely causes of high consumption are fuel leak, binding brakes, missing or stuck open thermostat, etc.

 

[corky]

It has 6 gears actually ? smart arse! I'm replacing the whole exhaust and spark plugs etc...

 

[oldhammer]

32.4 mpg

you must be driving it hard..or there is something wrong with it,

ibung 20 quid in mine it last two weeks, average around 40-41.4 mpg round town. altho iuse 6th where ican,
motorway use ican get agood 50-60s

is exhaust blowing or running lumpy ?
summat aint right there. is there enough wind in the tyres?

 

[oldhammer]

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it was only abit of banter mate, or ithought so

no need to remove it.. your posts brighten up this forum keep up the good work

 

[Caravadossi]

... I've done 40 miles been driving sensible and it's used half of it ...

Looking at av.mpg in isolation won’t tell you much.
Check all your black-box readings & think outside the box.
40 miles … travel time? 4 trips of 10 miles ?? 8 trips of 5 miles??
Outside temp has been good for snow.
Winds speeds now are 30 knots – gusting to 40.
& your temp gauge is too low for optimum mpg.

012046Z

 

[corky]

Haha yeah it's only banter thanks guys I know just seems weird I will have a full check tomorrow on the exhaust, spark plugs tyres etc as I'm driving it sensible just to see if there was a problem

 

[oldhammer]

A service might do it a world of good mate,

 

[corky]

Right 6 days passed done 100 miles and the petrol light is on averaging 35.5mpg from £30 of fuel hmmm something not right

 

[oldhammer]

Mine has dropped down abit,

37-38 mpg yesterday.. must be this frosty weather,


wont be long off summer mate, mpg will pick up then for sure,

have you checked the wind in the tyres,,are they good?

 

[fingers99]

Don't rely on the dash reading. Do a proper, by calculation, working out of mpg. Having said that, 35mpg would be pretty good for stop start conditions.

 

[corky]

Well they were all on 22 psi pumped them up correctly I think it needs new spark plugs and exhaust needs checking

 

[oldhammer]

Well they were all on 22 psi pumped them up correctly I think it needs new spark plugs and exhaust needs checking

get a cloth,stick hand over exit on back box,

Hiss from front =Blow, worth a check,

mine started leaking at the join off flexy, due to stupid fubard engine mount,(dogbone)

 

[Brendan W]

Well they were all on 22 psi pumped them up correctly I think it needs new spark plugs and exhaust needs checking

Bit soft. What have you pumped them up to ?

 

[Westbeef]

I average 35-37 MPG off the reading shown by the dash and that's with a mix of motorway miles and stop start city driving. I also can't resist to put my foot down in 2nd occasionally . My thermostat needs changing though for defo.

 

[corky]

Haha loves a bit of the second gear, ermm pumped them up to 31 psi I haven't had time due to working 24/7 I think it's the exhaust and spark plugs il try the exhaust tonight the back box has rust on the bottom... Eeeeee il have a look when I get home

 

[oldhammer]

(loves a bit of the second gear)


Dont they all, see how quick the tyres go shiney mind,

 

[corky]

Ermmm put the cloth over the back box couldn't hear any hissing !

 

[corky]

When I get back from Egypt I'm going to clean the throttle body, spark plug change, inspect the exhaust and get the oil changed, fuel treatment...